Lathe-gearing.



R. ILLE BLOND a W. F. GROENE.

LATHB GEARING.

APPLIUATION FILED JAN. 1o, 1910.

Patented Nov. 19, 1912.

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able yoke hs for sliding on said shaft.

.main frame, said bushing also serving as a operated by a sliding key h3 through the meshing with the gear l when the slidig UNITED STATES PATENT oFFIoE.

RICHARD K. LE BLOND AND WILLIAM F. GROENE, .OF CINCINNATI, OHIO, ASBIGNQB T0 B. K. LE BLOND MACHINE TOOL COPANY, A CORPORATION OF OHIO.

LATHn-GEAEING.

Specification of Letters Patent.

Applikation mea January 1o, 1910. serial No. 537,318.

To all whom 'it may concern.'

Be it known that we, RICHARD K. LE BLOND and WILLIAM F. GRonNn, citizens of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Lathe-Gearing, of which the following is a full, clear, and exact specification.

rlhis invention relates to certain new and useful improvements in lathes.

rllhe invention has for its object the pro` duction of an improved constant speed driven head in which the speed changes can be instantly obtained.

A further object is the production of a lathe head provided with improved mechanismv whereby, particularly upon use in heavy work, the starting and'stopping of the mechanism is readily accomplished.

rlhe invention will be hereinafter fully set forth and particularly pointed out in the claims at-the end of the description.

The accompanying drawing is a horizontal sectional view illustrating one form of our invention.

rlhe lathe head of our invention is particularly adapted for heavy work and in the drawing 71, indicates the driving pulley mounted on a bushin h fastened tothe bearing for the driving shaft a. The said. shaft a is driven by means of a clutch 71.2

yoke h4 and handle h5; The yoke. h4 is provided with a cone bushing h". By this arrangement when the yoke h4 is shifted to release clutch h2 the cone a. engages the face 71.2, whereupon rotation of the head willH be immediately arrested. @n the shaft a are mounted the slidable gears H, H', both on the samequill and arranged with a suit- Adjacent the shaft a is a second shaft a? provided with two gears l, li', the gear H gears are in one position and the gear y meshing with the gear I in the other position.

form of mechanism may be employed in connection with the mechanism above described. As shown in the drawing, sliding gears d2, d2', d* are mounted on the shaft a3' and are so arranged that they will take the speed of gear when the mechanism is driven through gear H and the speed of I when driven through gear H. These gears d2, d2, @Z4 may be made in one integral piece or else keyed together tof revolve as a slngle unit. Mounted on the main spindle e are gears E, E", E2, the gear E meshing with the gear LZ2, the gear E with the gear da, and@ the gear E2 with the gear d". The gear E2 may be provided with any suitable clutch mechanism whereby said gear may be geared to the main spindle e and thereby transmit power to the spindle for the various Spindle speeds. I

From the foregoing it'will beseen that power will be transmitted from either gear H or H to gear l' or l and to the gears d2, d'3, d, which in turn transmit power through the gears E, E', E2.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent of, the United States, is:y

1. ln combination a drlving shaft, a bushing through which said shaft is passed, a clutch controlling the operation of said driving shaft, an operating member for said clutch extending through lsaid bushing, .a brake member coperating with one end of said bushing for arresting movement of said shaft, and means for operating said clutch and brake in unison.

'2. ln combination a driving shaft, a bushing through which said shaft is passed, a clutch controlling the operation of said driving shaft, an operating member for said clutch extending through said bushing a brake member cooperating with one end of Q Mmm@ I seid bushing for arresng movemento'f said names to this specificationl in the presence shaft, a yoke, means for operatm sani yoke, of two witnesses.

and connections between said yo e and said RCHARD K. LE BLOND. clutch ooergtng member and between the WXLLIAM F. GRENE.

E yoke enf said brake, whereby the brake and Witnesses:

clutch are opefated in umson. Eowno G. Sommrz,

In testimony whereof we have signed om' GRACE PUGH. 

